public class Example30 {
    public static void main(String[] args) {
        int[] arr = {9, 8, 3, 5, 2};
        System.out.print("冒泡排序前 ：");
        printArray (arr);
        bubbleSort (arr);
        System.out.print("冒泡排序后 ：");
        printArray (arr);
    }
    public static void printArray (int[] arr){
        for (int i =0;i< arr.length;i++){
            System.out.print(arr[i]+"");
        }
        System.out.print("\n");
    }
    public static void bubbleSort (int[] arr){
        for (int i = 0; i < arr.length - 1 ; i++) {
            for (int j = 0; j < arr.length - i -1 ; j++) {
                if (arr[j] > arr[j +1]){
                    int temp = arr[j];
                    arr[j] =arr[j+1];
                    arr[j + 1] = temp;
                }
            }
            System.out.print("第"+ (i+1)+"轮排序后：");
            printArray(arr);
        }
    }
}
